BMW N46 crank sensor replacement 320i E90

Another common issue on the E90 320i N46 engined BMW 3 series. To be fair, its a common issue on many cars - the crank sensor!
This one was pretty easy to diagnose as had the classic symptoms of a failing crank sensor plus the DTC P0335 was a bit of a giveaway!
The problem was the crank sensor on a lot of BMWs is not at all accessible, on some engines you can access from the bottom which was my hope but I couldn't get to it. See how I dealt with it in the video....
Check out www.williamposters.bandcamp.com for music used on the channel!

[@PreciousPodi]

Why is mine leaking

[@DaveReevesVXR]

Feel for you☹️

[@enjoydarville6257]

very helpful

[@DaveReevesVXR]

Awesome - thanks for the comment!

[@kaashifgaidien580]

Hello. My e90 320i n46 just cranks but won't start. New ecu but problem still there. Not starting. No signal to ecu .im out of options

[@DaveReevesVXR]

Does the RPM gauge move when cranking?

[@kaashifgaidien580]

Mine doesn't move. I need help 😫

[@DaveReevesVXR]

Has the crank sensor been done? Presumably the ECU has been programmed to the car?

[@kaashifgaidien580]

It's still the OEM sensor. Ecu goes on but there's no spark and I don't hear the fuel pump going on either. The car suddenly didn't want to start last week. It's just cranks . And all relays and fuses are fine

[@kaashifgaidien580]

Plugged the old ecu in. Same thing. All I hear is the throttle body going on